From: Kevin Hilman <khilman@ti.com>
To: Keshava Munegowda <Keshava_mgowda@ti.com>, Felipe Balbi <balbi@ti.com>
Cc: linux-omap <linux-omap@vger.kernel.org>
Subject: MFD USB host: prevents CORE retention in idle
Date: Wed, 23 May 2012 17:01:26 -0700 [thread overview]
Message-ID: <87zk8yxx9l.fsf@ti.com> (raw)
Hi Keshava,
Using current l-o master, I noticed that CORE was not hitting retention
in idle on my 3530/Overo. CORE hits retention on suspend just fine.
Debugging this, I found that usbtll_fck was still enabled during idle,
thus preventing CORE from hitting retention.
To test, I disabled USB host (CONFIG_MFD_OMAP_USB_HOST=n in .config) and
was then started seeing CORE hit retention in idle again.
I have nothing plugged into the USB host port on this board, so I
would've expected that runtime PM would've kicked in and shutdown this
clock.
Any ideas what's going on here? Is this expected behavior?
Kevin
next reply other threads:[~2012-05-24 0:01 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-24 0:01 Kevin Hilman [this message]
2012-05-24 0:25 ` MFD USB host: prevents CORE retention in idle Kevin Hilman
2012-05-24 7:05 ` Munegowda, Keshava
2012-05-24 17:02 ` Kevin Hilman
2012-05-24 22:13 ` Kevin Hilman
2012-06-05 17:50 ` Kevin Hilman
[not found] ` <CAP05o4L+0E6fa1VoP_UPTJgKjXb-VqZorUfzsTB3d-KVoFrXfw@mail.gmail.com>
[not found] ` <CAP05o4KuoQHhTRTCtdpiywgC1HjwzXZHhROKOgSLhoK76Z2aaQ@mail.gmail.com>
[not found] ` <87fwa56gxp.fsf@ti.com>
[not found] ` <CAP05o4JEEp-yXjijeeejN3j8uVBDQ35DMGqP9UKj3f7sNnO8LA@mail.gmail.com>
[not found] ` <CAP05o4LYhFQpEFukyCT2fA7XHPU2L5K8=8W0fncMJk6YEUWdOQ@mail.gmail.com>
2012-06-15 12:04 ` Munegowda, Keshava
2012-06-15 13:47 ` Jean Pihet
2012-06-18 8:09 ` Munegowda, Keshava
2012-06-19 18:02 ` Kevin Hilman
2012-06-20 6:23 ` Munegowda, Keshava
2012-06-20 9:29 ` Munegowda, Keshava
2012-06-20 14:23 ` Kevin Hilman
2012-06-21 7:12 ` Munegowda, Keshava
2012-06-21 10:47 ` Grazvydas Ignotas
2012-06-21 18:32 ` Kevin Hilman
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